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      1 /*
      2  * Copyright 2010-2012, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_BACKEND_H_  // NOLINT
     18 #define _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_BACKEND_H_
     19 
     20 #include "slang_backend.h"
     21 #include "slang_pragma_recorder.h"
     22 #include "slang_rs_check_ast.h"
     23 #include "slang_rs_object_ref_count.h"
     24 
     25 namespace llvm {
     26   class NamedMDNode;
     27 }
     28 
     29 namespace clang {
     30   class ASTConsumer;
     31   class DiagnosticsEngine;
     32   class TargetOptions;
     33   class CodeGenerator;
     34   class ASTContext;
     35   class DeclGroupRef;
     36   class FunctionDecl;
     37 }
     38 
     39 namespace slang {
     40 
     41 class RSContext;
     42 
     43 class RSBackend : public Backend {
     44  private:
     45   RSContext *mContext;
     46 
     47   clang::SourceManager &mSourceMgr;
     48 
     49   bool mAllowRSPrefix;
     50 
     51   bool mIsFilterscript;
     52 
     53   llvm::NamedMDNode *mExportVarMetadata;
     54   llvm::NamedMDNode *mExportFuncMetadata;
     55   llvm::NamedMDNode *mExportForEachNameMetadata;
     56   llvm::NamedMDNode *mExportForEachSignatureMetadata;
     57   llvm::NamedMDNode *mExportTypeMetadata;
     58   llvm::NamedMDNode *mRSObjectSlotsMetadata;
     59 
     60   RSObjectRefCount mRefCount;
     61 
     62   RSCheckAST mASTChecker;
     63 
     64   void AnnotateFunction(clang::FunctionDecl *FD);
     65 
     66   void dumpExportVarInfo(llvm::Module *M);
     67   void dumpExportFunctionInfo(llvm::Module *M);
     68   void dumpExportForEachInfo(llvm::Module *M);
     69   void dumpExportTypeInfo(llvm::Module *M);
     70 
     71  protected:
     72   virtual unsigned int getTargetAPI() const {
     73     return mContext->getTargetAPI();
     74   }
     75 
     76   virtual bool HandleTopLevelDecl(clang::DeclGroupRef D);
     77 
     78   virtual void HandleTranslationUnitPre(clang::ASTContext &C);
     79 
     80   virtual void HandleTranslationUnitPost(llvm::Module *M);
     81 
     82  public:
     83   RSBackend(RSContext *Context,
     84             clang::DiagnosticsEngine *DiagEngine,
     85             const clang::CodeGenOptions &CodeGenOpts,
     86             const clang::TargetOptions &TargetOpts,
     87             PragmaList *Pragmas,
     88             llvm::raw_ostream *OS,
     89             Slang::OutputType OT,
     90             clang::SourceManager &SourceMgr,
     91             bool AllowRSPrefix,
     92             bool IsFilterscript);
     93 
     94   virtual ~RSBackend();
     95 };
     96 }  // namespace slang
     97 
     98 #endif  // _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_BACKEND_H_  NOLINT
     99